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January 1993

Idiopathic Intracranial Hypertension (Pseudotumor Cerebri): Descriptive Epidemiology in Rochester, Minn, 1976 to 1990

Author Affiliations

From the Departments of Health Sciences Research, Sections of Clinical Epidemiology and Biostatistics (Drs Radhakrishnan, Kurland, and O'Fallon) and Neurology (Drs Ahlskog and Cross), Mayo Clinic and Mayo Foundation, Rochester, Minn.

Arch Neurol. 1993;50(1):78-80. doi:10.1001/archneur.1993.00540010072020

• The medical records-linkage system of the Mayo Clinic was used to identify cases of idiopathic intracranial hypertension in the 15-year period, 1976 through 1990, among the population of Rochester, Minn. Nine patients (eight women and one man) were identified, corresponding to an average annual age-adjusted incidence rate per 100 000 of 0.9 for the total and 1.6 for the female population. In females aged 15 to 44 years, idiopathic intracranial hypertension occurred at a rate of 3.3 per 100 000 per year; for those defined as obese (body mass index >26), the rate rose to 7.9. Median follow-up was 2.7 years (range, 5 months to 15 years). Three of 18 eyes developed visual impairment; this was mild in all cases.

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